Grandfather clocks often are built so that each one-way swing of the pendulum is a second. How long is the length of a simple pendulum for a 2.00 second period?
A) 0.993 m
B) 24.8 cm
C) 101.cm
D) 0.500 m
E) 500. cm
A
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Which approach is currently proving to be the most promising way of determining how life on Earth originated?
A) studies of Martian meteorites B) studies of organisms living around deep-sea ocean vents C) studies of the fossil record D) laboratory simulations of conditions present on the early Earth
Ethyne, H–C?C–H, is also named ______________
Fill in the blank(s) with correct word
Compared to the event horizon, the photon sphere of a black hole is
A) nearer the singularity. B) farther from the singularity. C) at the same location.
A uniform solid sphere of mass 1.5 kg and diameter 30.0 cm starts from rest and rolls without slipping down a 35° incline that is 7.0 m long
(a) Calculate the linear speed of the center of the sphere when it reaches the bottom of the incline. (b) Determine the angular speed of the sphere about its center at the bottom of the incline. (c) Through what angle (in radians) does this sphere turn as it rolls down the incline? (d) Does the linear speed in (a) depend on the radius or mass of the sphere? Does the angular speed in (b) depend on the radius or mass of the sphere?